A DIFFERENTIAL MECHANISM

摘要

A differential mechanism (10) has two output cam members (16, 17) rotatable about an axis (X-X) each cam member having a single annular cam surface (22, 23) of undulating wave form comprising equal numbers of pairs of mutually inclined surfaces (24, 25:26, 27). A plurality of cam followers (28) having end surfaces (29,30:32, 33) engage the cam surfaces of the output cam members, the arrangement being such that relative contra rotation of the output cam members (22, 23) causes the cam-followers (28) to slide axially. At least two different types of cam followers (28) are provided and the number of followers is an integer multiple of the number of pairs of inclined surfaces. An input member (11) slidably supports the followers (28) and moves the followers circumferentially relative to the output cam members. Arrangements are also disclosed for pumping oil into the differential and for locking-up the differential.